<template>
  <transition name="slide">
    <div class="food" v-show="showFlag" ref="food">
        <div class="food-content">
          <div class="imang-header">
            <img :src="food.image" >
            <div class="back" @click="hide">
              <i class="icon-arrow_lift"></i>
            </div>
          </div>
          <div class="content">
            <h1 class="title">{{food.name}}</h1>
            <div class="detail">
              <span class="sell-count">月售{{food.sellCount}}份</span>
              <span class="rating">好评率{{food.rating}}%</span>
            </div>
            <div class="price">    text-align: center;
    padding: 20px 10px 0;
    color: #23D359;
              <span class="now">￥{{food.price}}</span><span class="old" v-show="food.oldPrice">￥{{food.oldPrice}}</span>
            </div>
            <div class="cartcontrol-wrapper">
              <cartcontrol :food="food"></cartcontrol>
            </div>
            <div @click.stop="addFirst" class="buy" v-show="!food.count || food.count===0">加入购物车</div>
          </div>
          <split v-show="food.info"></split>
          <div class="info" v-show="food.info">
            <h1 class="title">商品介绍</h1>
            <p class="text">{{food.info}}</p>
          </div>
          <split></split>
          <div class="rating">
            <h1 class="title">商品评价</h1>
            <ratingselect @select="selectRating" @toggle="toggleContent"
            :selectType="selectType" :onlyContent="onlyContent"
            :desc="desc" :ratings="food.ratings"></ratingselect>
            <div class="rating-wrapper">
              <ul v-show="food.ratings && food.ratings.length">
                <li v-show="needShow(rating.rateType, rating.text)" v-for="rating in food.ratings" class="rating-item border-1px">
                  <div class="user">
                    <span class="name">{{rating.username}}</span>
                    <img class="avatar" width="12px" height="12px" :src="rating.avatar">
                  </div>
                  <div class="time">{{rating.rateTime | formatDate}}</div>
                  <p class="text">
                    <span :class="{'icon-thumb_up' : rating.rateType===0,
                    'icon-thumb_down' : rating.rateType===1}"></span>{{rating.text}}
                  </p>
                </li>
              </ul>
              <div class="no-ratings" v-show="!food.ratings || !food.ratings.length">暂无评价</div>
            </div>

          </div>
        </div>
    </div>
  </transition>
</template>

<script type="text/ecmascript-6">
import BScroll from 'better-scroll';
import Vue from 'vue';
// 带花括号是引入export的某个方法
import {formatDate} from '../../common/js/date';
import cartcontrol from '../../components/cartcontrol/cartcontrol';
import split from '../../components/split/split';
import ratingselect from '../../components/ratingselect/ratingselect';

// const POSITIVE = 0;  // 满意
// const NEGATIVE = 1;  // 不满意
const ALL = 2;       // 全部

  export default {
    // 接收外部参数
    props: {
      food: {
        type: Object
      }
    },
    data() {
      return {
        showFlag: false,
        selectType: ALL,
        onlyContent: true,
        desc: {
          all: '全部',
          positive: '推荐',
          negative: '吐槽'
        }
      };
    },
    methods: {
      /**
       *  可被外部调用方法命名规则：show()  不带下划线
       *  带下划线的方法是不可被外部调用的方法
       */
      show() {
        this.showFlag = true;
        this.selectType = ALL;
        this.onlyContent = true;
        this.$nextTick(() => {
          if (!this.scroll) {
            this.scroll = new BScroll(this.$refs.food, {
              click: true
            });
          } else {
            this.scroll.refresh();
          }
        });
      },
      hide() {
        this.showFlag = false;
      },
      addFirst(event) {
        if (!event._constructed) {
          return;
        }
        this.$emit('cartAdd', event.target);
        Vue.set(this.food, 'count', 1);
      },
      needShow(type, text) {
        if (this.onlyContent && !text) {
          return false;
        }
        if (this.selectType === ALL) {
          return true;
        } else {
          return type === this.selectType;
        }
      },
      selectRating(type) {
        this.selectType = type;
        this.$nextTick(() => {
          this.scroll.refresh();
        });
      },
      toggleContent() {
        this.onlyContent = !this.onlyContent;
        this.$nextTick(() => {
          this.scroll.refresh();
        });
      }
    },
    // events: {
    //   'ratingtype.select'(type) {
    //     this.selectType = type;
    //     this.$nextTick(() => {
    //      this.scroll.refresh();
    //     });
    //   },
    //   'content.toggle'(onlyContent) {
    //     this.onlyContent = onlyContent;
    //     this.$nextTick(() => {
    //      this.scroll.refresh();
    //     });
    //   }
    // },
    filters: {
      formatDate(time) {
        let date = new Date(time);
        return formatDate(date, 'yyyy-MM-dd hh:mm');
      }
    },
    components: {
      cartcontrol,
      split,
      ratingselect
    }
  };
</script>

<style lang="stylus" rel="stylesheet/stylus">
@import "../../common/stylus/mixin.styl"
.food
  position :fixed
  left:0
  top:0
  bottom: 48px
  z-index:30
  width :100%
  background :#fff
  .imang-header
      position: relative
      width: 100%
      height: 0
      padding-top: 100%
      img
        position: absolute
        top: 0
        left: 0
        width: 100%
        height: 100%
      .back
        position: absolute
        top: 10px
        left: 0
        .icon-arrow_lift
          display: block
          padding: 10px
          font-size: 20px
          color: #fff
  .content
    padding: 18px
    position: relative
    .title
      line-height: 14px
      margin-bottom: 8px
      font-size: 14px
      font-weight: 700
      color: rgb(7, 17, 27)
    .detail
      margin-bottom: 18px
      line-height: 10px
      height: 10px
      font-size: 0
      .sell-count, .rating
        font-size: 10px
        color: rgb(147, 153, 159)
      .sell-count
        margin-right: 12px
    .price
      font-weight: 700
      line-height: 24px
    .now
      margin-right: 8px
      font-size: 14px
      color: rgb(240, 20, 20)
    .old
      text-decoration: line-through
      font-size: 10px
      color: rgb(147, 153, 159)
  .cartcontrol-wrapper
    position: absolute
    right: 12px
    bottom: 12px
  .buy
    position: absolute
    right: 18px
    bottom: 18px
    z-index: 10
    height: 24px
    line-height: 24px
    padding: 0 12px
    box-sizing: border-box
    border-radius: 12px
    font-size: 10px
    color: #fff
    background-color: rgb(0, 160, 220)
  .info
    padding: 18px
    .title
      line-height: 14px
      margin-bottom: 6px
      font-size: 14px
      font-weight: 700
      color: rgb(7, 17, 27)
    .text
      line-height: 24px
      padding: 0 8px
      font-size: 12px
      color: rgb(77, 85, 93)
  .rating
    padding-top: 18px
    .title
      line-height: 14px
      margin-bottom: 6px
      margin-left: 18px
      font-size: 14px
      font-weight: 700
      color: rgb(7, 17, 27)
    .rating-wrapper
      padding: 0 18px
      .rating-item
        position: relative
        padding: 16px 0
        border-1px(rgba(7, 17, 27, 0.1))
        .user
          position: absolute
          right: 0
          top: 16px
          line-height: 12px
          font-size: 0
          .name
            display: inline-block
            vertical-align: top
            margin-right: 6px
            font-size: 10px
            color: rgb(147, 153, 159)
          .avatar
            display: inline-block
            vertical-align: top
            border-radius: 50%
        .time
          margin-bottom: 6px
          line-height: 12px
          font-size: 10px
          color: rgb(147, 153, 159)
        .text
          line-height: 16px
          font-size: 12px
          color: rgb(7, 17, 27)
          .icon-thumb_up, .icon-thumb_down
            margin-right: 4px
            line-height: 16px
            font-size: 12px
          .icon-thumb_up
            color: rgb(0, 160, 220)
          .icon-thumb_down
            color: rgb(147, 153, 159)
      .no-ratings
        padding: 16px 0
        font-size: 10px
        color: rgb(147, 153, 159)


/*定义元素最终移动到的位置，以及移动到此位置需要的时间*/
.slide-enter-active
  transition: all .5s ease
  transform:translate3d(0,0,0)
/*定义元素从什么位置离开，以及离开岛指定位置所需的时间*/
.slide-leave-active
  transition: all .5s ease
  transform:translate3d(0,0,0)
/*定义元素从100%的位置移入到0，过渡结束后再从0回到100%的位置*/
.slide-enter,.slide-leave-to
  transform:translate3d(100%,0,0)




</style>
